Here is my dilemma, I have a neukin turbo mani and a holset hy35 turbo (I just haaaad to b different, oh also the turbo was free so it helped my decision a bit). The wg flange is deffinately not where I need it to be (check out the picts, sorry if they are a bit on the large side).




So here goes...

1) Do you think that I would be alright having one of the welders @ my work cut the wg pipe and reweld facing the oposite direction without purging the manifold? The welder who would do it is quite good, but would welding w/o purging greatly effect the integrity of the wg support piping? Should I ghetto rig up some way to slowly flow Argon through the mani while he welds it?

2) Or should I take it to a shop and have them cut and reweld the flange to a different position while purging? What so you think a reasonable price is to pay for this work?

TIA for any suggestions.

 

What happens when you face the turbo the other direction or will that not work, it's kind of hard to tell from the pics..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dragline &raquo;</TD></TR><TR><TD CLASS="quote">What happens when you face the turbo the other direction or will that not work, it's kind of hard to tell from the pics..</TD></TR></TABLE>

if you understood how massively large this turbo is...youd understand why he had trouble fittin it in...

the compressor cover & turbine housings are huge.....i had to cut my ac mount in half to even get it to fit on the drivers side....putting it on the passenger side id literally be thru the block...the holset snails are big...and powerfull too! for holsets!

my suggestions....cut it off and reweld it....while doing so make it easy on yourself seeing a good location for a dumptube and make sure its going to work beforehand

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dragline &raquo;</TD></TR><TR><TD CLASS="quote">What happens when you face the turbo the other direction or will that not work, it's kind of hard to tell from the pics..</TD></TR></TABLE>

Yea, just like drum said (and he knows cause he has the hx35) turning the turbo the other way....not even close to fitting. It has to be on the side it is. And just like he said I will still be chopping off ~1/4 of my lower driver side mount @ the block.

Sup drum?? Get to a dyno yet man? Post some #'s up and rep 4 tha honda holset crew.

So should I just have one of the guys here @ work cut it and reweld it w/o purging? Should it be cool like that, or should I take it to b purged and welded or maybe just weld w/o purging and brace it w/some stainless angle or somethin?

Maybe I am just overthinkin it and should say screw it and just have my co-worker weld it and be done with it.
Just don't really want to have to remove all the crap necessary to have the wg piping welded later on.

 

not need for the purge...it helps the weld penetrate better and keeps it cleaner.....but as long as he's good w/ the torch id let him have at it...

 

I don't see why your welder at work can't backpurge it, but make sure to backpurge it. Last thing you want is some carbide precipitation melting off into the turbo. If it were for a header it really wouldn't matter that much.

 

The wastegate tube will be the first thing to crack on any manifold. I'd definitely purge it. And like backpurge said, there shouldn't be any reason your guy can't purge it.

 

why the first thing to crack?

 

vibration and more erattic heat cycles would be my guess.

 

Exactly, the vibration and the weight of a wastegate hanging off the end of 1 tube. Alot of times you can rev a motor and see the wastegate vibrate. I've seen ALOT of manifolds crack, and that's always where they start.

 

I have been making braces midway down the dumptubes lately and it works really well, btw.

 

You mean like this? Sorry, the pics are big...

 

that is exactly how I do mine except my 'tab' doesnt look as good usually. I either weld on a bolt to act as a stud for a flat brace or I weld on a nut like you did.

 

Damn Tony! Those are some really small beads on that dp, not used to seeing beads that small. One of these days I'll learn how to weld, I don't think my hands are steady enough, I woulda made a horrible surgeon. "Ooops hit the carotid again.........."

 

It's not that it would be impossible to backpurge the manifold, but we do not have anything set up to do it here on site. That is why earlier I said that I could prolly rig somethin up to do it, it would just be ghetto, because all we have here are the argon bottles. I would have to rig up a hose to do it, how much flow should it be backpurged @?

Side note Tony how close are you guys to Dallas?? I might be gettin a job at Forney power plant.

 

I'm about 20 min. east of Dallas, and about 20min. west of Forney.

 

Well, if I move there I know who my next shop will be.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KeyserSoze &raquo;</TD></TR><TR><TD CLASS="quote"> I would have to rig up a hose to do it, how much flow should it be backpurged @? </TD></TR></TABLE>

 

tony, you never fail to amaze me , well until you can get your welding to look like Geoffs robot, then you will win totally, lol, take care man

 

i welded a tab from downpipe to dumptube before and it caused it to snap off.

 

I've done this a bunch and never had a problem because of it. Maybe yours was under alot of tension for some reason? With this being v-banded at each junction, if something moved on the downpipe and caused it to rotate, then i could see something breaking. Luckily I have a brace on the downpipe to the back of the motor as well.

Thanks guys

 

Five Star Manufacturing, the company that makes the band clamps for that downpipe and a bunch of other even torque clamps is less than a block away from me (Crest Hill, IL). We get their stuff cheap.

 

I get mine from precision, i'm sure you get it cheaper!! lol

 

u don't need to purge. I didn't purge my manifold when I made it. as long as you get good penetration, you don't need to purge.

 

Why do you think that purging is not necessary?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Why do you think that purging is not necessary?</TD></TR></TABLE>

The guy @ my work who welds also said that it isn't necessary, but he also said that it couldn't hurt. He said that the pipe was thick enough that if he got good penetration it should be okay without purging. Needless to say, we will be purging it anyway. Peace of mind.....